Improvement in door-locks



time

Wetten m- MONROE B. FOO'IE, OF NORTHAMPTON, ASSIGNOR TO HIMSELI",WILLIAM M. GAY- LORD, AND E. N. FOOIE, OF NEW ENGLAND VILLAGE,MASSACHUSETTS.

I Letters Patent No. 84,484, dated Decembm` 1, 1868.

IMPROVEMENT IN DOOR-LOCKS.

I uw@ The Schedule referred to in these Letters Patent and making partof the same.

To (all persons to Iwhomy these presents may emne Be it known that I,Mosnon B. Foo'rn, of' Northampton, in the county ot' Hampshire, andState of Massachusetts, have invented a new and useful Improvement inLocks for Doors; and I do hereby declare the same to be fully describedin the following speeitieation, and represented in the accompanyingdrawh'igs, of which- Figure. l exhibits a view of my improved lock asitappears with the cap of its ease removed from the rest of the ease.

Figure 2 is an inner-sideview of such nap.

Figure Sis a transverse section ofthe lock.

Figure -1 is a side view of its key.

The body A of the case is cylindrical, the cap shown in figs. 2 and 3,at b, constituting part of such body. This cylindrical body projectsfrom a plate, e, which, when the loek is let into a door, is to befastened to the door by sere-ws;

The ease contains a slotted bolt, B, it having a reetangular slot madethrough it, as shown at (l. Projecting down from the upper side of theslot is a rib, e, provided with a triangular-shaped stop, j, and alsowith anotch, g, the two being formed and arranged in manner asrepresented.,

The key-ho1es of the case are shown at h t.

.Figure 5 exhibits a top View, and

Figure o', a rear elevation of the bolt.

Figure 7 is a rear end view of it.

A spring-catch, 7.', formed as shown in top View in Figure S, projectsfrom the rear end of the lock-ease, and bears against the stop j, andserves, with such stop, to hohl the bolt in its advanced position. Theyalso keep the bolt, when back, from being advanced, except by the key.

A lever or tumbler, I, pivoted to the stop j, or turning vertically on apin, Im., projeeting therefrom, has its longer arm extended over thekey-holes. Vhen the key is turned, for the purpose of throwing back thebolt, it will first bear against the longer arm ofthe lever, and turnthe said lever on its fulcrnm, so as to cause the shorter arm to bearupon and depress the spring-catch, in order that the key, while actingagainst the rear side of the notch of the bolt, may force back the bolt.

I claim the combination and arrangement of the lever lwith the cam andstop j, the spring-catch k, and

with the slottedbolt and its case, substantially as de scribed.

MONROE B. FOOTE.

Witnesses: i -f W. S. KINGSLEY, C. E. CLARK.

